Harrow-tooth.



No. 869,299. Q IATENTED 001. 29. 1907.-

L. w. FAIR. I HARROW TOOTH;

APPLIOATlON FILED FEB. 11, 1907. a

7 By I A TTOR'NE Y5 LEWIS 1W. FAIR, OF WALDRON, ARKANSAS.

HARROW-TOO'IH.

Specification of Letters Batent.

,Patented pct. 29, 1907.

Application filed February 11,1907. Serial No.'356.819.

To all whom it may concern:

Be it known that I, LEwIs W. FAIR, a citizen of the United States,residing at Waldron, in the county of Scott and State of Arkansas, haveinvented a new and useful Harrow-Tooth, of which the following is aspecification.

This invention relates to harrow teeth and has for its object to providea strong durable tooth having one end thereof provided with a pointedterminal and its opposite end formed with a cultivator blade so that byinverting the harrow or reversing the tooth either end of the latter maybe presented to the soil.

A further object of the invention is to provide a harrow tooth havingits intermediate portion threaded for engagement with the harrow frameand its pointed terminal provided with angular cutting faces whereby thetooth may be detachably secured to the frame and said tooth rotated inthe latter so as to expose any particular cutting face.

A still further object of the invention is to generally improve thisclass of devices so as to increase their utility, durability andefiiciency as Well as to reduce the cost of manufacture.v

With these and other objects in view the invention consists in theconstruction and novel combination and arrangement of parts hereinafterfully described, and illustrated in the accompanying drawings, it beingunderstood that various changes in form, proportions and minor detailsof construction may be resorted to within the scope of the appendedclaims.

In the accompanying drawings forming a part of this specification:Figure 1 is a side elevation partly in section of a portion of a harrowframe showing a tooth constructed in accordance with my invention inposition thereon. Fig. 2 is a transverse sectional view taken on theline 22 of Fig. 1.. Fig. 3 is a similar view taken on the line 33 ofFig. 1. Fig. 4 is a perspective view of the harrow tooth detached.

Similar numerals of reference indicate corresponding parts in all of thefigures of the drawings.

The tooth consists of a body portion 5 preferably cylindrical in formand having its opposite ends tapered and its intermediate portionthreaded at 6 for engagement with the tooth-carrying bar 7 of the harrowframe.

One end of the body portion is inclined or beveled to form a terminalpoint 8 defining a plurality of cutting faces 9 for engagement with thesoil, said body portion being mounted for rotation in the bar 7 so as topresent any particular cutting face to the soil.

The opposite end of the body portion is flattened and the terminalthereof bent or curved laterally to form a cultivator blade 10, the endof the blade being inclined or beveled in opposite directions to form acutting edge 11.

The rear face of the cultivator blade 10 is convex or rounded, asindicated at 12 While the forward face there of is inclined or beveledin opposite directions towards the longitudinal edges of the blade toform inclined faces 13 which serve to deflect the soil on each side ofthe cultivator blade as the latter is drawn through said soil.

By having the tooth threaded in the harrow frame in the mannerdescribed, said tooth may be readily r0.- tated within the frame andalso detached from the frame and reversed so that either working end ofthe tooth may be presented to the ground. If desired, however, thehandles of the harrow frame may be removed and the latter inverted so asto present either working end of the teeth to the ground without thenecessity of removing and reversing the position of said teeth. Theteeth may also be adjusted vertically of the frame by rotating the teethwithin the frame thereby to regulate the depth of cut by said teeth.

The harrow teeth may be used in connection with .either wood or ironframes and when the latter are employed suitable openings are preferablyformed in the frame and threaded for engagement with the threads on theteeth.

From the foregoing description in will be seen that there is provided anextremely simple, inexpensive and efficient device admirably adapted forthe attainment of the ends in view.

Having thus described the invention what is claimed is:

l. A harrow tootlr comprising a body portion having different workingends and provided with intermediate threads.

2. A harrow tooth comprising a body portion having tapering working endsand provided with intermediate threads.

3. A reversible harrow tooth comprising a cylindrical body portionhaving intermediate threads and provided with different working ends.

4. A harrow tooth comprising a body portion having one end thereofprovided with a pointed terminal defining angular cutting faces and itsOpposite end provided with a cultivator blade, the intermediate portionof the tooth being threaded.

5. A harrow tooth comprising a body portion having one end thereofpointed and provided with angularly disposed cutting faces and itsopposite end flattened and curved laterally to form a cultivator blade,the intermediate portion of the teeth being threaded.

6. A harrow tooth comprising a cylindrical body portion having one endthereof provided with a pointed terminal defining a plurality of cuttingfaces and its opposite end flattened and curved laterally to form acultivator blade, the active face of the cultivator blade being inclinedin opposite directions to form soil deflecting surfaces, there beingthreads formed on the intermediate portion of the tooth.

7. A harrow tooth comprising a body portion having one end thereofinclined or beveled to form a plurality of angular-1y disposed cuttingfaces terminating in a point and its opposite end flattened and curvedto form a cultivator blade, the rear face of the blade beingsubstantially semicircular in cross section and the active face thereofinclined in opposite directions to form soil deflecting surfaces, therebeing threads formed on the body portion between the pointed terminaland the cultivator blade.

8. The combination with a barrow frame, of a tooth threaded in saidframe and provided with different working ends.

9. The combination with a barrow frame, of a reversible tooth threadedin said frame and having one end thereof inclined to form a plurality ofangular cutting faces terminating in a point and its opposite endflattened and curved laterally to form a cultivator blade, said toothbe- 10 ing adjustable vertically of the frame.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature in the presence of'two witnesses.

LEWIS W. FAIR.

Witnesses CHAS. P. BAILEY, WM. U. SANDERS

